I don't leave home without one. I have it clipped to my keys and don't find it heavy (canvas ones) bc I just keep my license, debit card, and a bit of cash inside. So easy to grab and go!
I have..
Mono, Ebene, Azur, old style Pomme vernis (same size as the canvas ones) - I rotate between these as indicated above.
Black Multicolor (grenade interior) - I use this attached to the D-ring inside my bag to hold extra cards, gift cards, etc.
I find the larger size cles (current vernis, empriente, and multi color) to be too big to hand from ignition. The canvas ones also seem to fit more bc they are "looser."
Hope this helps!